噪声与振动控制

›› 2010, Vol. 30 ›› Issue (3): 27-30.DOI: 10.3969/j.issn.1006-1355.2010.03.008

• 振动理论与数值解法 • 上一篇    下一篇

《结构外声场分析中的无限元法》

李丽君,李红艳,柴山,刚宪约   

  1. （山东理工大学交通与车辆工程学院，山东淄博255049）
  • 收稿日期:2009-07-14 修回日期:1900-01-01 出版日期:2010-06-18 发布日期:2010-06-18
  • 通讯作者: 李丽君

《IFEM on Structural Exterior Acoustic Fields Analysis》

LI Li-jun,LI Hong-yan,CHAI Shan,GANG Xian-yue   

  1. (Shandong University of Technology, School of Transportation and Vehicle Engineering, Zibo Shandong255049, China)
  • Received:2009-07-14 Revised:1900-01-01 Online:2010-06-18 Published:2010-06-18
  • Contact: LI Li-jun

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摘要： 无限元法在声场分析中逐渐开始应用，本文研究了声场分析的无限元法的基本理论，比较了边界元法与无限元法的优缺点，分析了无限元法收敛精度的相关因素，通过对无限元法在结构外声场分析中实际应用的几个相关参数的计算，主要包括坐标原点的选取、无限元阶数、坐标矢量的定义等，总结了无限元法应用时重要参数的几条规律，对无限元法在声场分析领域的应用推广具有一定的理论与实用价值。

关键词: 声学, 无限元, 边界元, 有限元, 声场

Abstract: Recently, the Infinite Element Method (IEM) is applied to the acoustic field analysis gradually. In this paper, basic theory of IEM is studied; the advantages and disadvantages of BEM (Boundary Element Method) and IEM are compared. The factors related to convergent precision of IEM are analyzed. Several important parameters and concepts of IEM, including the origin of coordinate system, the order of IEM, and vectors of coordinates, are introduced. The conclusions of IEM are presented for acoustic field analysis.

Key words: acoustics, infinite element, boundary element, finite element, acoustic field

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